Traverse motion for winding machines



G. N. TAYLOR. TRAVERSE MOTI-ON FOR WINDING MACHINES.

PPLICATION FILED OCT- 13, 1921.

Patented Aug. 22., 11922.,

m u M u :fl J y? ,nom Mv nl dag Jn/we G. N. TAYLOR.

TRAVERSE MOTION FOR WINDING MACHINES.

APPLICATION FILED OCT- l3, 192|.

Patented Aug. 22., 1922.

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#710m 'it may concern known that i? Geenen N. 'iariione et t Providence, in the county et' Provi -cel ltate oi" Rhode island, a citizen of 'the .ilin'ted States, have invented certain new' useful improvements in rifrenverse Tit/ioilinding ivi chilies, of which the is a specification:

es to Winding machines ists impro v Aents in the traverse-- p the threarhgui which deposits the windings in place to built. up cop or package of the desired form.

l2 .y inv ntion reiates more particularly to cone-Winders JFor winding conical cops or packages and one object oit the improvement is to so regulate the iaying of the yarn on t e cone as cause the latter to be built up with a gradualiy increasing pitch or taper on its su face,

Another object of the invention is to provide means for ccntroliing 'he reciprocation oi' the thread-guide to eiiect a quick reversal et motion at the end 01 its traverse, whereby the thread or yarn coils will be disposed With abrupt bends at the extreme et traverse to prevent overruns or cobwebs on the end of the package.

Further objects of the improvement are set forth in the following specification which describes a preferred embodiment or" the invention as illustrated by the accompanying drawings. in the drawings:

F ig. l is a front elevation oi a portion of a winding machine showing my improved traverse-motion as applied to use thereon; and

Fig. 2, an end elevation oi' the same, taken in part section on the line 2-2 of Fig. l.

As herein shown my invention is applied to a Winding machine of the frictionor drum-driven type comprising, essentially: a rotating drive-roll or friction-drum D; a Winding-mandrel C, on which the cop or package is. wound through frictional contact with the roll; and a reciprocating threadguide G which traverses the yarn or thread hack and forth to deposit it in helical coils on the mandrel.

The structure and arrangement of these essential elements of the Winding mechanism are Well known to those versed in the art,j and in other types oi machines, to which m present invention is also adapte y the wir 1 Specification. of Letters atent.

a Y J. i Patented i921. Serial No. 567,496.

ing-mandrel is driven positively instead of by contact of the cop With a drive-rolic in the present drawings i have shown only a small section ci a muitipie machine n as usually arranged, comprises a winding units each complete in. its here iilustrated the drive-roll. D is i onD driven from e i c 53611.

mounter a continuous sh `it which carries a series or similar rolls for the other Winding units. Arranged above each drive-roil i) is a windinganandrel C plhich receives the paper oriiber cop-tube on. which the package is Wound. The Winding-mandrel is usualiy supported from a swinging arm or arms which allows 1t to recede from the axis oie the drive-roll with the growth ot the Winding7 a preferred i construction for this part ci the mechanism being shown and described in my copending application Serial No. 485,278, filed July 16, i921, but not herein illustrated. Sufhce it for the present to state that as the yarn is huilt up on the mandrel C the latter rises away from the drive-roll D to accommodate the growth of the package, and the mandrel also receives a tilting motion in relation to the airis oi' the roil to compensate for the variation in the taper on the surface of the cone or package being Wound. in this manner the surface of the Winding is maintained constantly in Contact with the periphery of the drive-roll whereby the latter imparts rotation to the cop or package.

Each drive-roll D is provided With a thread-guide Gr arranged in close association therewith and adapted for reciprocation in a path parallel With the axis of the roll. As herein shown the thread-guide G consists of a blade-like member formed With a thickened'head at the top which is provided with a slot or groove 3 through which the thread or yarn y feeds to the package. The thread-guide G is mounted on a crosshead 4 attached to a horizontal sliding rod or traverseebar 5. Usually the traverse-bar 5 extends the length of the Whole machine and carries a series of guides for the several winding units. As herein illustrated the traverse-bar 5 is mounted to reciprocate in bearings 6 supported "from standards or traversefhar 5 in pa-raiiei; reiation theretoi Q manos@ The crosshead 4 is constructed with loopshaped ears 9 clamped around the traversebar by means of screws 10, and is provided withI a depending plate-portion 11 formed with a loop 12 at the bottom which straddles the lower rod 8 to serve as a guide `or runner as it slides thereon. `idrojecting forwardly from the front of the plate-portion 11 of the crosshead 4 are two ears 13 bent outwardly from the sides of a central opening 14 in the plate. rlhe ears 13 are adapted to abut the sides of a roller 15 pivoted on a stud 16 lcarried at the upper end of an oscillating traverse-arm or lever 20 and projecting through the opening 14 in the crosshead.

The traverse-arm or lever 2O is pivoted to a slide or cross-head 21 so that the lever may be given a reciprocating motion in addition to its oscillatingy movement about the axis of its pivot. As shown in the drawings,the slide 21 is formed with two lower bearings 22 which encircle a horizontal rod 23 held at its ends in Xed bearings 24 on the machine frame F. Arranged above and parallel with the rod 23 is a second rod or bar 25, preferably of rectangular lcross-section, which is held at its ends in the bearings 24. The slide 21 is provided with an upper forked extension. 26 which straddles the bar 25 so that the latter with its companion rod 23 form a track or guideway for' the slide.

As shown more particularly in Fig. 1, the traverse-arm or lever 2O is substantially l..- shaped or of bell-crank type and is pivoted to the slide 21 at the junction of its Atwo right-angled arms 27 and 28. The pivot for the lever 20 may conveniently consist of a pin' or stud 29 projecting forwardly' from a hub 30 on the slide 21 and carrying a nut 31 at its end for holding the lever in place thereon. The stud. 29 also projects rearwardly through the huh 30 and is providedy with a flange or collar 32 abutting the end of the hub, see F ig. 2. utwardly beyond the flange 32 the stud 29 is extended to form a bearing 33 for a roller or bowl 34 which engages with the helical groove 35 of a traverse-cam 36 of usual, construction. As shown in Fig. 2, the cam 36 has a circular rim 37 supported from spokes 38 radiating fromy a hub 39 which is secured to a shaft 40. |l`he shaft 40 is driven through suitable gearing or `other transmission-means, not herein shown, connected with the source of power which drives the machine. ln the type of machine herein shown a single traverse-mechanism, comprising the cam 36 and its cooperating elements, serves to transmit motion to all of the several thread-guides G mounted on the sliding traverse-bar 5. lf desired, however, a separate traverse-motion may be employed for each winding unit and it is to-be understood that the present irnprovement is applicable to either type of machine. f

-cam 36.

lt will be seen that the traverse-slide 21 l slides on its track 23, 25 under the reciprocating motion imparted thereto from the lt will likewise be obvious that the traverse-lever 2G, being carried on the slide 21, will be reciprocated therewith and in addition to this reciprocation an oscillating motion is also imparted to the lever. This latter motion of the lever 2O is effected by 'means of a fixed cam or guiding-track 41 a sharp reverse curve or bend 45. The cam slot y44 engages with a roller' or bowl 46 pivoted on a stud or pin 47 at the outer end of the arm 28 of the lever 20, see Fig. 2. llt will 'be obvious that'if the traverse-arm or lever 20 were held iixed on the slide 21 it would receive a uniform reciprocating motion from the main cam 36, but, being pivotally mounted on the slide with its arm 28 acted upon by the curved cam-groove 44, the lever will be rocked back and forth during its reciprocation with the slide. This rocking or oscillating movement of thelever 20 acts to impart an increment of motion to the upper end of the arm 27 of the lever as the latter moves to the right, as viewed in Fig. 1, and a corresponding decrement of Inovement as it Inovesin the opposite direction. This variable motion of the lever 2O is communicated to the traverse-bar 5 and the thread-guide G mounted thereo'n'in the manner and for the purpose as later explained.

Having now described the structure and ,arrangement of my improved mechanism in 4detail its method of operation will next be explained: The winding machine is' prepared for operation byl placing a paper coptube X, or other package support, on the cone-holder or winding-mandrel C' with the thread or yarn, r/ leading thereto through the eye 3 in the thread-guide G. ln most machines of the present type the drivingroll or drum D is driven continuously and when the cop-tube X is placed ,in contact therewith, as shown in FigE 1, the windingmandrel C will be rotated, from. the frictional contact of the tube with the peripheral surface of the roll. As the winding-mandrel C is thus driven from the drive-roll D the yarn 1/ will be wound onto the tube or support X, and meanwhile the thread-guide G is reciprocated back and forth longitudinally of the mandrel in the manner as next explained. f

rl`he cam 36 is driven from its shaft 40 through the medium of suitable gearing or other transmission mechanism as above eirrlhe plate 41 is formed o afin-edis the cam is rotated its helical cove vs on the roller Se to slide the 2l baci; and forth on its hori- 25 and the traverse-arm 2O being mounted on the slide is reciprocated therewith. it will be noted from Fig. l of the drawings that the throw of the cam 36 is ess in extent EL, but that traverse h of the tube.

' imp s to the slide 2l only a the full length of traverse of the 'Gr and the added motion is A:ed to the guide complete its ull traverse by cans, r an increment of i ovement the upper end of the traverseian the length of e coils of yarn y' 1lbstantrally equal nat is to saya ver 30. This increment of movement is effected by rocking the lever 2O about its pivot 29 through the a on of the cam or traclr Lil. on its horizonta-L arm 28. lt will be noted that the cam-slot de of the track Lll curves downwardly to the rieht, as viewed ilTigg. and hence the arm 28 of the lever 20 '-.vill Ibe depressed as its roll e6 travels outwardly toward the righthand end of the slot. This action results in causing the upper and of the arm 27 of the lever 20 to be rocked to the right whereby the threadguide G connected thereto is advanced beyond the limit of row of the traverse-slide 2l. ift before been explained that the arm 2T of the lever 20 is connected to the crosshead e by means of the roller l5 which engages the two opposite ears 13, and through this arrangement the arcuate movement of the roller under the rocking action of the lever '1Z0 is compensated for by its sliding` action between the two ears. The cam 86 is driven at a constant spee and the traverse-slide 2l is therefore reciprocated with a uniform motion, but it will be obvious that as the lever, 20 is oscillated while moving` with the slide the/crosshead el will not only be given increment of movement over that of the slide 2l, but it will also be operated at an accelerated speed as it moves to the right, andwith a corresponding retardation as it moves to the left. rlhis change of speed in the movement of the crosshead 2l is communicated to the threadguide G* whereby the latter is reciprocated with a differential motion as follows: Starting the base of the coneholder the speed of the guide is accelerated as it moves toward the tip or apex end thereof, and at the reversal of its movement the speed of the guide is Igradually retarded as it traverses back toward the base end of the holder. 'lhe purpose of this acceleration in the speed of the guide as lit moves toward the tip of the cone, and retardation as it moves back 'toward the base, is to cause the yarn to be laid in helices which have an increasing pitch or lead toward the small end of the cone. Stated brieflvythe coils or turns of the yarn are laid closer together at the base of the cone than at its apex end and th refore the yarn builds up faster at the la.` rer end of the package than vat the smaller end. The result of this method of laying the yarn on the cone-holder is to cause the cone or package-to build up with a gradually increasing mass at its base so that the taper on the surface of the cone is constantly increased. rthis method of building' the cone with a gradually increasing pitch or taper on its surface is of advantage as makingr for a freer delivery of the yarn in unwinding it for delivery to other processes. lt is well known in the art that in winding on the first layers of yarn in the cone the coils' have a greater tendency to slip or slide out of place than when the package has assumed a substantial diameter. That is to say, the coils will not hold in place as well on a surface of relatively small diameter and consequently the taper of the cone-holder must be restricted 'within certain prescribed limits. @n the other hand, after a certain amount of yarn has been built up. on the cone-holder the coils of winding will hold in place better and therefore the taper of the surface may be in creased. it is of advantage to wind the cone with as great a pitch or taper on its surface as is practicable in order to insure a free delivery of the yarn in unwinding it,' and hence it has become the preferred practice to start the Winding with a minimum taper or pitch to the layers and to gradually increase the taper as the cone grows in diameter. T he object of my improved traverse-motion is therefore to effect a system of laying the coils of yarn in place on the cone-holder whereby a greater mass is built up toward the base end of the cone so that the taper or pitch on its surface increases from the prescribed minimum to the desired maximum. ln this way my invention yprovides for winding a cone of the preferred type in which the layers of winding lgradually assume a greater inclination to the axis of the package so that as thiI latter attains its full .diameter the yarn will deliver more freely from its outer surface in unwinding it for delivery to other processes.

is an added feature of improvement my invention also provides for a quick reversal of the traverse of the yarn at the base end of the cone for the purpose of preventing overruns or cobwebs. lt has before been ei;d plained that the camgroove ad in the track 41 which acts on the transverse-lever 20 has an abrupt bend 45 at its upper end, see Fig. l. The purpose of this reverse bend l5 in the camgrroove 44C and the manner in which it controls the movement of the lever 20 is as follows: As the lever 2O moves to the left.l1 as viewed in Fig. l,-tlio rol-ler It@ on its arm.

.44. The bend 45 of 28 travels up the curved incline of the trackl 44 and just as the traverse-slide 2l reaches the end of its throw in this direction the roller enters the sharp bend 45 of the groove the groove will therefore act on the lever to give a. quick rocking action thereto whereby its upper end is moved to the left with a quick, sharp throw and immediately the traverse-slide 21 starts tothe right again the action of the bend 45 in the cam-groove will cause a sharp reversal of the movement of the lever. Stated brieHy, the sharp bend 45 in the camgroove 44 acts on the roller 46 to rock the lever 20 to whip its upper end to the left and then to theright again with an accelerated ratewof movement, and this motion is communicated through .the cross-head 4 to the thread-guide Gr to prevent the. latter from making a dwell or pause at the end of its stroke. Through this action on the thread-guide G the latter is caused to lay the yarn in place on the surface of the winding with the coils terminating in sharp bends or knuckles at the base end of the cone so that there is less tendency 4for the yarn to fall over the edge of the cone to form loose loops or cobwebs, as they are termed.

It will be observed from the foregoing de-.

scription that my invention provides an in1- proved traverse-mechanism for controlling the lay of the yarn in building up the package whereby a cone ot the required shape may be produced; and that the invention operates further to provide a quick reversal in the traverse of the yarn to prevent overruns or cobwebs at the end of the package where they are most liable to occur.- 1r desired, the quick-reversing means may be arranged tooperate on the threadguide at both ends of its stroke but usually there is less tendency of the yarn to overrun the nose end of the cone because the guide is moving' faster at this point and its reversal of motion is therefore naturally quicker.

While I have herein shown and described a preferred embodiment of my improved device it is' obvious that various modifications may be made in the structure and arrangement of its mechanism without departing from the spirit or scope ofthe invention; therefore, without limiting myself in this respect, l claim:

l. 1n a winding machine, the combination with a rotatable cop-holder, of means for traversing the yarn on the holder, a cam for reciprocating the traverse-means, and means intermediate the cam and the traversemeans to effect a differential movement of the latter whereby the yarn is traversed with) increasing speed toward one end of the holder and decreasing speed toward the op.

posite end thereof.

2. 1n a winding machine, the combination with a rotatable cop-holder, of means vtor `a diminishing eternas traversing the yarn. on the holder, a cam for reciprocating thetraverse-means, anda second cam acting on the traversemeans to effect a dierential .rate of movement thereof whereby to cause the yarn to be traversed with accelerated speed toward one end of the holder land correspondingly retarded speed toward the opposite end thereof,

3. 1n a winding machine, the combination with a rotatable cop-holder, of a reciprocable thread-guide for traversing the yarn on the holder, guide with a constant extent of traverse, and a second cam acting on the thread-guide to impart an accelerated speed of traverse to the latter as it moves in one direction and speed as it moves in the opposite direction. l

4. 1n a winding machine, the combination with a rotatable cop-holder, ci? a recipro cable thread-guide for traversing the yarn on theholder, means for reciprocating the guide with a constant length of traverse, and a cam intermediate the reciprocating means and the thread-gnide to impart an acceler ated rate erses in one direction and a decelerated rate as it traverses back in the opposite direction.

5. ln a winding machine, the combination with a rotatable cop-holder, ot traversemeans for traversing the yarn on the holder, a traverse-lever for operating the traversemeans, means to reciprocate said traverselever bodily, and means to impart a continuous oscillating motion lto the lever during its reciprocation whereby to' cause the traverse-means to be operated with a dilierential motion to lay the yarn in helices lwhich are spaced closer together toward one end of the co p 6. n a winding machine, the combination with a rotatable cop-holder, of traversemeans for traversing the yarn on the holder, a traverse-lever for operating the traversemeans, means to reciprocate said lever bodily, and means to rock the lever in opposite directions `during alternate strokes in its reciprocation, said rocking-means being operated continuously during the reciprocation of the lever. p

7. 1n a winding machine, the combination with a rotatable cop-holder, of traversemeans for traversing the yarn on the holder, a traverse-lever for operating the traversemeans, means to bodily reciprocate said traverse-lever, and means operated from the reciprocation of said lever to cause the latter to be continuously oscillated lirst in one direction and then in the other in accordance with its direction ot' movement during its reciprocation.

8. lln a winding machine, the combination with a rotatable cop-holder, of traverse means for traversing the yarn on the holder, a reciproca-ble member, mee-ns to reciprocate of motion to the latter as it travi a cam for reciprocating the threadsaid member, a lever pivoted on said member and connected to operate the traversemeans, and means for continuously rocking the lever in opposite directions during alternatestrokes in its reciprocation.

9. ln a Winding machine, the combination with a rotatable cop-holder, of traversemeans for traversing the yarn on the holder, a lever connected to operate the`traversemeans, means to bodily reciprocate said traverse-lever, and a cam acting on said lever to continuously rock the latter to cause it to imparta dierential rate of movement to the traverse-means.

10. lin a Winding machine, the combination With a rotatable cop-holder, of traversemeans for traversing the yarn on the holder, a lever for operating the traverse-means, means to bodily reciprocate said lever, and a fixed cam operating on said lever to rock 'the latter during its reciprocation to cause it to' impart a dierential rate of movement to 4the traverse-means.

11. ln a Winding machine, the combination with a rotatable cop-holder, of traversemeans for traversing the yarn on the holder, a lever for operating the traverse-means, a

.fixed cam, and means on the lever travelable on the cam to rock the lever during its reciprocation to cause it to impart a diHerential rate of movement to the traversemeans.

12. lin a Winding machine, the combination with a rotatable cop-holder, of traversemeans for traversing the yarn on the holder, a bell-crankl lever connected to operate the traverse-means, Ymeans to bodily. reciprocate said bell-crank lever, a fixed member having a curved cam-track, and means on the lever travelable on the cam-track to rock the lever during its reciprocation to cause it to impart a differential motion to the traverse-means.-

reciprocable slide, means to reciprocate the.

slide, a lever pivoted on the slide and connected to 'traverse the thread-guide, a fixed member having a curved guiding-track, and means on the lever` travelable on the track to rock the lever to cause it to impart a differential motion to the thread-guide.

15. ln a Winding machine, the combination with a traversin thread-guide, of a lever for operating t e guide, means to bodily reciprocate the lever, and a fixed member having a curved cam-track operating on the lever to displace the latter during its reciprocation, said cam-track formed with a sharp bend at its end adapted to act on the lever to impart a rapid to-and-fro movement to the. thread-guide at the end of its traverse to effect a quick reversal of movement of the guide.

16. lin a Winding machine, the combination with a rotatable cop-holder, of traversemeans for traversing the yarn on the holder, reciprocating-means for operating the traverse-means, means connecting the reciprocating-means With the traverse-means, and

means for o eratin said connecting-means to displace the traverse-means relative to the reciprocating-means to effect a quick reversal of movement of the traverse-means.

17. in a vvindin machine, the combination With a rotata le cop-holder, of traverse-means for traversingthe yarn to lay it in helical coils on the holder, means to reciprocate the traverse-means, and means intermediate lthe reciprocating-means and the traverse-means for causing an acceleration of movement of the traverse-means at the end of its traverse to effect a quick reversal of the coils of Winding.

18. ln a Winding machine, the combination with a rotatable cop-holder, of traverse-means forA traversing the yarn to lay it iii-helical coils on the holder, means to reciprocate the. traverse-means, a lever connecting the reciprocating-means With the traverse-means, and means to rock said lever With a qui k action to effect a sharp yreversal in the movement of the traversemeans at the end of its traverse.

19.' lin a Winding machine, the combination With a rotatable cop-holder, of a threadguide for traversing the yarn on the holder, a reciprocable member, means to reciprocate said member, a lever pivoted on said member and connected to the thread-guide, and a cam acting on said lever to rock the latter to impart a quick reversal in the movement of the thread -guide at the end of its traverse.

20. ln a winding machine, the combination with a rotatable cop-holder, of a threadguide for traversing the yarn on the holder, a reciprocable slide, means to reciprocate the slide, a lever pivoted on the slide, a fixed cam-track formed With a sharp bend, and means on the lever engaging the cam to cause the latter to rock the lever to impart a quick reversal of movement of the threadguide at the en d of its traverse.

Aln testimony whereof ll aflix my signaiisv 

